package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.nio.charset.StandardCharsets;
import java.time.LocalDateTime;


@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }


        //密码比对
		// 进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        System.out.println(password);
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
    @Override
    public void addEmployee(EmployeeDTO employeeDTO) {
        //先转化为employee对象
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        //完善公共属性
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes(StandardCharsets.UTF_8)));//设置默认密码
        employee.setStatus(StatusConstant.ENABLE);//设置默认状态
//        employee.setCreateTime(LocalDateTime.now());//设置创建时间
//        employee.setUpdateTime(LocalDateTime.now());//设置修改时间
//        Long empId = BaseContext.getCurrentId();
//        employee.setCreateUser(empId);//设置创建人
//        employee.setUpdateUser(empId);//设置修改人
        employeeMapper.addEmployee(employee);
    }

    /**
     * 员工分页查询
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //开启分页插件
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        //分页查询
        Page<Employee>  page= employeeMapper.pageQuery(employeePageQueryDTO);
        //构建返回值
        PageResult pageResult = PageResult.builder().total(page.getTotal()).records(page.getResult()).build();
        return pageResult;
    }

    /**
     * 启用或禁用员工
     * @param status
     * @param id
     * @return
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();
        employeeMapper.update(employee);
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @Override
    public Employee getById(Long id) {
        //处理密码为****，不返回敏感数据
        Employee employee = new Employee();
        employee.setPassword("**********");
        return employeeMapper.getById(id);
    }

    /**
     * 修改员工信息
     * @param employeeDTO
     * @return
     */
    @Override
    public void updateEmployee(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);
        //基础字段的修改
//        employee.setUpdateTime(LocalDateTime.now()); //修改时间
//        employee.setUpdateUser(BaseContext.getCurrentId());//更新修改人ID
        employeeMapper.update(employee);
    }
}
